add draftevent class

quartz/src/main/java/com/vitorpamplona/quartz/events/DraftEvent.kt

@@ -0,0 +1,58 @@
+/**
+ * Copyright (c) 2024 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.events
+
+import androidx.compose.runtime.Immutable
+import com.vitorpamplona.quartz.encoders.HexKey
+import com.vitorpamplona.quartz.signers.NostrSigner
+import com.vitorpamplona.quartz.utils.TimeUtils
+
+@Immutable
+class DraftEvent(
+    id: HexKey,
+    pubKey: HexKey,
+    createdAt: Long,
+    tags: Array<Array<String>>,
+    content: String,
+    sig: HexKey,
+) : Event(id, pubKey, createdAt, KIND, tags, content, sig) {
+    companion object {
+        const val KIND = 31234
+    }
+
+    fun create(
+        dTag: String,
+        originalNote: EventInterface,
+        signer: NostrSigner,
+        createdAt: Long = TimeUtils.now(),
+        onReady: (DraftEvent) -> Unit,
+    ) {
+        val tags =
+            arrayOf(
+                arrayOf("d", dTag),
+                arrayOf("k", "${originalNote.kind()}"),
+            )
+
+        signer.nip44Encrypt(originalNote.content(), signer.pubKey) {
+            signer.sign(createdAt, KIND, tags, it, onReady)
+        }
+    }
+}